Process and apparatus i



1,626,418 April 26, 1927- J. MacDONALD PROCESS AND APPARATU$ FOR MANUFACTURING AIORPIIOUS CAIN, ETC

Filed Dec. 14, 1925 Patented Apr. 26, 1927.

UNITED STATES PATENT ()FFICE.

JOEL W. MACDONALD, OF LITTLE ROCK, ARKANSAS. ASSILGNOR '10 XVlNIFRED L. RUCKER, DE LOS ANGELES CALIFORNIA.

PROCESS AND APPARATUS FOR MANUFACTURING AMORPHOUS CABBQNv ETC.

Application filed December My invention relates to an improved process and apparatus for manufacturing amorphous carbon, lamp black or carbon black from ozokerite, paraffin, distillates and similar substances.

Among the salient objects of my invention is the provision of a process of the type named which will be exceedingly simple and inexpensive to practice, which will result in the recovery of amorphous carbon of great chemical purity, and which will also permit the recovery of lighter hydrocarbons and volatile substance from material being treated.

The manner of practicing my invention can be best understood by reference to the accompanying drawing which illustrates diagrammatically a simple arrangement of apparatus adapted for the purpose. It will be understood. however, that such apparatus can be extensively modified without departing from the scope of the claims directed thereto.

In the drawings 10 indicates any ordinary furnace on which is mounted a melting pot 11. Tapped from the side of the pot 11 near the lower end of the tank is a pipe 12 which is returned upon itself into the furnace so as to dispose its free end heneath the bottom of the pot, said free end of the pipe 12 carrying a burner 13. Valve 14 controls the bore of pipe 12. Situated apart from the furnace 10 is a channel house 15 having its interior connected with the interior of the furnace by a pipe 16. Tapped from the bottom of the melting pot 11 is a pipe 17 which extends through the furnace and to the interior of the channel house 15 and carries on its free end a burner 18. A valve 19 controls the bore of pipe 17. The upper end of the melting pot is shown closed by a detachable still top 20 which in turn is connected with a condenser coil 21. As will hereinafter appear the incorporation of the still top 20 in the apparatus illustrated is only necessary where it is desired to recover lighter hydrocarbons or other volatile substance from the material being treated, it being dispensed with entirely where it is desired only to drive off moisture from such material.

In carrying my process into practice through the medium of the apparatus illustrated, I charge the pot 11 with ozokerite,

14, 1925. Serial No. 75,320.

parafiin, distillates or other similar substances, open valve 14 and ignite burner 13, the smoke from which latter passes through the pipe 16 to the interior of the channel house 15 where its carbon content is recovered by condensation. At this point if it is only desired to drive off moisture from the material in the pot 11 the still top 20 may be removed.

Should it be desired to recover light hydro carbons from the material in the pot 11 the still top 20 remains associated with the apparatus as shown, and distillation effected under a temperature of about 420 F. After accomplishing the desired fractional distillation the burner 13 is subdued to maiutain a temperature of about 220 F. and valve 19 is opened and the channel house burner ignited and regulated to a yellow or smudge flame so as to produce a maximum amount of carbon deposit. which deposit is afterward recovered in the usual manner.

It will be observed that my process heretofore described is featured by the initial purification of the material and the freeing of water and light oils from such material before the same is burned which results in the deposit of a much purer grade of amorphous carbon having a more uniform specific gravity, and a more stable solubility, as well as freedom from scales and crystals. Furthermore. my process after being properly instituted continues in operation automatically until all the material being operated upon is consumed.

I claim:

1. Apparatus for manufacturing amor phous carbon, lamp black or carbon black from ozokerite, paraflin, distillates and similar substances, comprising a melting pot. means for heating said pot. an enclosed housing, a valved pipe having one end connected with the interior of the pot and its other end extending into the said housing, and a burner on the last named end of said pipe.

2. Apparatus for manufacturing amorphous carbon, lamp black or carbon black from ozokerite, paraffin, distillates and similar substances, comprising a melting pot, means for heating said pot, a detachable cover for the pot, a condenser, a connection between the cover and condenser, an en closed housing, a valved pipe having one end connected with the interior of the pot and its other end extending into said housing, and a burner on the last named end of said pipe.

3. Apparatus for mamitacturing i\1]l01' phous can-hon, lamp black or carbon black fron'i ozokerite, pnrafiin, distiilates and siniiiar substances, comprising a furnace structure, a inciting" not, a burner Within the furnace beneath the pot, a vab'ed pipe connecting said burner with the interior of the pot, an enclosed housing, a connection between the interior of the furnace and the interior o'f-the housing, a, second valved pipe having); one end connected with the interior oi the pot and its other end extending into said housing, and a burner on the last named end of said second pipe.

4. Apparatus for manufacturing amorphous carbon, lamp black or carbon black from ozokerite, paraffin, distillates and other carbonaceous substances, comprising a melting pot, a burner for heating said pot, an enclosed chamber, means for conveying products of con'lbustion from said burner to the interior of the chamber, a burner Within said chamber, and means for convey ingmaterial Within the pot to said last named burner.

In testimony whereof I hereunto afiixmy signature.

JOEL W. MACDONALD. 

